<!DOCTYPE html>
<html>
<head>
	<title></title>
	<meta charset="utf-8">
	<style type="text/css">
		.b {
			width: 100px;
			height: 35px;
			border: 1px solid black;
			margin: 20px;
			float: left;
			text-align: center;
			line-height: 35px;
		}
		.b:hover {
			border-color: red;
		}
		.c {
			border-color: red;
		}
	</style>
</head>
<body>

<div style="width: 850px; height: 80px;margin: 20px auto; border:1px solid grey">
	<div class="b">1</div>
	<div class="b">2</div>
	<div class="b">3</div>
	<div class="b">4</div>
	<div class="b">5</div>
	<button style = "width:100px; height:35px; float: left; margin: 20px">提交</button>
</div>

</body>
</html>

<script type="text/javascript" src="D:\apino\jquery\jquery-3.0.0.js"></script>

<script type="text/javascript">

$('.b').click(function(e) {
	$(this).addClass('c').siblings().removeClass('c')
	// e.stopPropagation()  // 阻止事件冒泡（1）
	return false;	// 阻止事件冒泡（2）

	// return false 不仅阻止了事件往上冒泡，而且阻止了事件本身。event.stopPropagation() 则只阻止事件往上冒泡，不阻止事件本身。
})

$('button').click(function() {
	var value = $('.c').text();
	alert(value);
})

$(document).click(function() {
	$('.b').removeClass('c')
})



/**
 * Copyright (c) 2016 hustcc
 * License: MIT
 * Version: v1.0.1
 * GitHub: https://github.com/hustcc/canvas-nest.js
**/
!
function() {
	function n(n, e, t) {
		return n.getAttribute(e) || t
	}
	function e(n) {
		return document.getElementsByTagName(n)
	}
	function t() {
		var t = e("script"),
		o = t.length,
		i = t[o - 1];
		return {
			l: o,
			z: n(i, "zIndex", -1),
            // 页面线段透明度
			o: n(i, "opacity", 1),
            // 页面线段颜色
			c: n(i, "color", "255,0,0"),
            // 页面线段数量
			n: n(i, "count", 99)
		}
	}
	function o() {
		a = m.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
		c = m.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight
	}
	function i() {
		r.clearRect(0, 0, a, c);
		var n, e, t, o, m, l;
		s.forEach(function(i, x) {
			for (i.x += i.xa, i.y += i.ya, i.xa *= i.x > a || i.x < 0 ? -1 : 1, i.ya *= i.y > c || i.y < 0 ? -1 : 1, r.fillRect(i.x - .5, i.y - .5, 1, 1), e = x + 1; e < u.length; e++) n = u[e],
			null !== n.x && null !== n.y && (o = i.x - n.x, m = i.y - n.y, l = o * o + m * m, l < n.max && (n === y && l >= n.max / 2 && (i.x -= .03 * o, i.y -= .03 * m), t = (n.max - l) / n.max, r.beginPath(), r.lineWidth = t / 2, r.strokeStyle = "rgba(" + d.c + "," + (t + .2) + ")", r.moveTo(i.x, i.y), r.lineTo(n.x, n.y), r.stroke()))
		}),
		x(i)
	}
	var a, c, u, m = document.createElement("canvas"),
	d = t(),
	l = "c_n" + d.l,
	r = m.getContext("2d"),
	x = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
	function(n) {
		window.setTimeout(n, 1e3 / 45)
	},
	w = Math.random,
	y = {
		x: null,
		y: null,
		max: 2e4
	};
	m.id = l,
	m.style.cssText = "position:fixed;top:0;left:0;z-index:" + d.z + ";opacity:" + d.o,
	e("body")[0].appendChild(m),
	o(),
	window.onresize = o,
	window.onmousemove = function(n) {
		n = n || window.event,
		y.x = n.clientX,
		y.y = n.clientY
	},
	window.onmouseout = function() {
		y.x = null,
		y.y = null
	};
	for (var s = [], f = 0; d.n > f; f++) {
		var h = w() * a,
		g = w() * c,
		v = 2 * w() - 1,
		p = 2 * w() - 1;
		s.push({
			x: h,
			y: g,
			xa: v,
			ya: p,
			max: 6e3
		})
	}
	u = s.concat([y]),
	setTimeout(function() {
		i()
	},
	100)
} ();




</script>